Pressure regulating valve



May 5, 1931. o. G. GOLDMAN 1,803,697

PRESSURE REGULATING VALVE Filed Aug. 29, 1927 2 sheets-sheet 1 (a Fw/Q, is., f 2, 00 Y u o .mad/00g 1 3 n my A oz ca L., l I y 57 M' INVENTOR.

l Z 0500K G. GOLDMAN ATTORNEYS.

May 5, 1931. o. G. GOLDMAN 1,803,697

PRESSURE REGULATING VALVE Filed Aug. 29, 1927 2 Sheets-Sheet 2 K zz-130%@ Q30 to easier operation. and increased sensitive-l Patented May v5, 193i.

vlfix'riala'r OFFICE f osoARs. GOLDMAN, or sim lriznnrsco, QALIFORNIA PRESSUREl nner-marinev VALVE Application mea August 29, 1927'.- serial No. 216,079.

This inventionrelates to Yfluid pressure regulators generally and especiallyto automatic pressure reducing and controlling valves as used in city waterdistributing systems. v

5, ,Anobject ofht'heginventionv is toprovide ari-automatic pressure. regulating. valveof thecharacter described which. will be responsivelto a-smallvariationin pressure over a considerable range.

Y `Another object is to provide a valve. ofy this i kind which will have a .full and clear opening for free flow `ofrliquid therethrough when thevalve'is fully turned on.

Another object is vto provide a valve of this L, kind which is hydrostatically balanced in such .a way that the. balanceV is automatically maintained under all variationsin pressure and degrees of Opening, thus greatly .reducing the operating friction. and Vcontributing ness of the valve in its automatic regulation ofppressure.: y. i y

y A further Objectis to provide a `pressure regulating valve which will not be injured or put out of order by. pieces of foreign matter such as wood, cloth, fish or otherfmaterial sometimespassing through water pipes, and which choke or unseat the heretofore used type of regulating valve, but will permit such' material .to pass through. without injurious results.

Other object-s are the provision of an automatic regulating. valve of fst'urdy, compact*vr construction, all parts of which are` readily. accessible, and which lends itself to economical manufacturing.

draulic piston orA cylinder connected by a crank yfor operating the plug andbeing forced one way or the other by water taken from the high pressure side of the valve deliveredrespec'tively to opposite ends of thepiston by a pressure sensitive controlling piston valve or regulator adapted to be setA to operate at orrplug turning piston.A

Vmain transverse port 10 adapted to align with the,4 inlet andoutlet to form an unobstructedy various water pressures from the lovT pressure side of the valve.v v v YIn the `drawings accompanying this application y ,e y ,p K

Fig. Lisa side elevation of the valvev cornplete wi'th its automatic controlling mechanism. A Fig. 2 isa section ofFig. 1 taken along the line 2--2 thereof. l

Fig. v3 isa section on the line 3-3 of Fig. l. Fig; 4 is a `top'plan view of Fig. 1l Fig. 5` is a center section of the operating Fig. 6 is a center line section ofthe sensitive vcontrol valve.

g.' 7 is a center line section of the sensitive control valve or regulator taken at right angles to the section shown in Fig. 6.

f Fig; Sis end elevation of the regulator. i Fig. 9ifs azcentral section showing a modified 'form'of my invention. t U,In further detail the drawings show at l a Valve body provided with an inlet passage Q for liquid 4under high pressure, and an outlet passage 3 for theV liquid under reduced and controlled,pressure,for under full pressure if the valvebe wide open. i

Between the inlet and outlet is a revolvable plu'gff81of hollow form vand provided with a through passagewhen the plug is turned 'inthe position shown in Figs. 1 and 2,fsimilar1 this respect to any common plugvalve.- In the figures the opening orf-passage `10 Y through thep'lug is shown reduced in Vdiameterand the inlet and' outlet connecting passages tapered inwardly to meet -it soas to formV afVenturi throat and thereby permita V smaller plug for a 4given size'pipewithout restriction of the. flow and at thesame time overcome any `tendency toiiva'rd the formationcf eddies within the passage, though it should` beherel noted .that the valve may have a through passage of uniform size if desired. ,.V'Ihe-moving piston cylinder. which turns the plug is'nfiounted on topof the valve `and `'general y designated 4, while the vpressure sen- Y stye .regulator also `mounted von top of the 10 main valve structure is generally designated 7.

The body, plug, operating cylinder and pressure sensitive regulator and their accessories to be described are the main parts of the valve, the remaining structure being to promote ease of operation, durability and accessibility.

In Fig. 3 the plug 8 stands vertically and is outwardly tapered with its small end up and supported from below on an adjusting screw 18 threaded at 19 through a closure plate 15, the screw being locked by a nu t 20 and provided with a squared head 21 so that it may be adjusted to carry the weight of the plug and yet insure close working of the same within its seat.

The screw 18 is provided with a conical or rounded upper end seating in a socket formed axially on the plug so that the latter is free to revolve thereon with minimum friction.

The plug seats within a bushing or liner 11 tapered inside to fit the plug and cylindrical outside. The liner is stationary in the body and preferably secured thereto by being pressed in place, thus providing for its removal when worn by simply forcing it out of either top or bottom of the body, the bore for the liner extending straight through the body and being closed by lower plate 15 and an upper plate 25 secured respectively to the body by cap screws 16 and 26. The liner is provided with openings 12 and 13 which coincide respectively with the outlet and inlet passages 3 and 2.

Recessed into the lower closure plate 15 is a wearing ring 17 positioned beneath the lower edge of the valve-plug. This is an emergency ring to take the weight of the plug in the case of undue wear on vpivot pin or screw 18.

A shaft 27 extending axially of the plug 8 and secured thereto by screws 33 passing through a Hange 31 formed on the shaft and into a boss 32 on the plug, provides means for rotating the plug to vary the main Valve opening.` This shaft passes upward through a Y ,y stuiiing box 28-29-30 mounted in the upper closure plate 25.

- To the' outer end 35 of shaft 27 is rigidly secured a crank arm 34 slotted at its end at 38, while above the crank arm and arranged for movingthe same and thereby the plug 8, is the piston cylinder generally designateol 4.

This piston cylinder 4 is slidably supported on a stationary hollow piston rod 5 carried on bracket extensions 77 bolted to the upper plate 25. The cylinder is fitted with stuffing boxes 100 at opposite ends mounted in heads 101 bolted at 102 to the cylinder so that it will slide water tight on the hollow piston rod 5. and a boss 36 secured to or extending 'i from the bottom of the cylinder seated in the slot 38 of the crank arm 34 provides a slidable connection from the cylinder to the arm so that as the cylinder is moved along the shaft it will swing the crank arm to thereby turn the valve plug 8, for closing or opening the main passage, depending on the direction in which the cylinder moves.

The travel of the cylinder 4 and thereby the turning of plug 8 from full open to completely closed position is limited by a piston 47 secured to the piston rod 5 within the cylinder, and to force the cylinder in either direction water under pressure is admitted to either side of the piston through ports 48-419 in the rod extending in opposite directions through the center Vof the rod.

The above described mechanism providesl the necessary movement to rotate the plug 8. It remains however to provide means to con` trol the movement of the cylinder 4 on the rod 5 so that it will be` actuated to turn the plug to maintain any desired pressure on the low pressure side of the valve, and the ensuing description will deal with the mechanism provided to do this. That is, to actuate the cylinder 4 in response to variations in pressures on the low pressure side'of the valve.

The mechanism thus provided and generally designated 7 consists of a cylinder 40 within which is mounted a plunger 41. The cylinder is provided with a high pressure port 42, Aa low pressure port 43, a waste port 44 and ports 45 and 46.

The port 42 receives the pipe 42 which pipe brings in water from the high pressure side of the valve.

The low pressure port 43 receives pipe 43 which brings in water from the low pressure side of the valve.

The waste port'44 may receive a pipe 44 to carry away the released water from cylinder 4, or may discharge directly without a pipe.

Pipes 45 and 46 connect to ports 45 and 46 respectively and lead to opposite sides of the fixed piston 47 in cylinder 4 through opposite ends of the rod 5, as at 50, 51, the rod being hollow from each end towards the middle portion and open to ports 48 and 49, while between these ports there is a solid section of the rod upon which the piston 47 is mounted; all as indicated in Fig. 5.

As a means of alternately connecting ports 45 and 46 with the high pressure port 42 the plunger 41 is provided with ports 53 and 54 which are connected by a passage 55. Recesses 56, 57 and 58 are turned upon the plunger. At the end ofthe plunger 41 remote from the low pressure port 43 there is a spring 60 which serves to yieldingly hold the 5'!" plunger 41 against the low pressure head admitted through port 43 and provide means for adjusting the pressure at which the plunger will move. The means for adjustingy the spring Vtension comprise a screw 61 mounted in the" end closing plug 62V `of-4 the shoe 63 in turn bearingagai1ist`one'end rof the spring 60, the other end of the spring embracing the .stem 64 of the plunger/4l; i

The total travel ofltheplunger4l is determined by the length of the stem 64 or any other suitable stop. Theicylinder 40 is provided with a pedestal 'for firmly mounting upon the plate oi the valve'. A screwthreadel plug 66 closes the low pressure end 0f cylinder 40.

In operation this sensitive forms as follows:

The angular position of the crank 34 at full open position of the valve plug8 is'show in Fig. 4 in dotted lines.l I f mechanism per- Starting fromthis open position with no pressure on the low side, which is the condi- ,tion that occurs when water is Airst turned v into theline, it is seen in Fig. 7 that the high pressure'watei enters througlipipe 42 and passes into the recess 58 thence through port 54 into the communicating passage 55"and through port?? Vto the' annular recess 56.' Y yAs shown in Fig. 6 this recess communicates with' port 45 in the cylinder and leads the pressure into pipe 45. Pipe 45"V leads the pressure to the end-of thepcylindei'inarled A and since the piston is liXed andthe cylinder moves theforce keeps the cylinder fixed in this position with plug Swideopen. Assoon, how-V ever, as the water pressure builds up on thev low pressure side to the predetermined point as 'determined by the setting of the spring 60 it passes through pipe 43 and enters the'e'ndl of cylinder wliereit exerts sucient force to move the plunger 4l'against the tensionof spring 60. vThis movement closes port 45 and brings the plunger into a neutrall position; As long'rr as the/low pressure remainsconstant at the pointdetermined by the setting of the spring the plunger remains immovable.

plunger is moved'further against-the spring,

closes oliport 45 from connection with recess' 56'and brings port 46 ,intoy communication with the annular recess 58 which 'recess is' under high pressure isapplied yin the'B endr of the cylinder 4 and an outlet'supplied Jfor 'the existing' water in the `A end oftl-ie'V cylinder. A l."

^ This results inamoving the 'cylinder4 along the rod 5 and rotating the f plugl '8' towards ciosing. The mechanism is so designed as.` to c'ect a complete closure of the plug 8 so long the last above described conditions exist.A

However the plunger 4lA normally remains in a neutral position' and only connects port 45with 42 when vthe lowpressure is vtoolovv and 42 with '46 when -the' lowpres'sure be; comestoo high. In each reversal'oftheI` con.-

But when the low pressure builds up too high theV l nections "described :the izdljerwater#pressurein` Cylinder' 40 and bearingagainst a movable" the cylinderv4 Nopposing movement `Itliereofu is discharged i through 'waste port :by way` I 'of the annular recess 57. 4 *gf -.'l `hereis anothe'r'rv'ery important feature to i my invention, for" a' plug `valve ofV the char-t acter -Y describedY is whenpartially 'orftotally `shut offv si'ibject to ahigherfpresfsure against oneside'of the plug thanthe oppositeside `and `thereby 'tendingto orcethe plug overV againstits housing'or seat. '-Thisf-produces" great friction'al' resistanceagainst turning rof the plug, and'lwhich combinedy with the friction ofa plug working in ataperseat wouldy make it impossible'to'get any. sensitivenes's in a valve of this kindequipped with' automatic' control. f 'f y s To overcome `the unequal water pressure against opposite' sidesfof the Vplug I provide" anovel hydrostaticy balancing of the plug which is automaticallyl maintained regardless as tothe angular' position .to which the plug 8 maybe turnedfin its seat; This is accom-z plished by providing tubular extensionstoithe: plug above and below its'main `portflO operat=v ing respectively in upper and lower chambers formed vin the body, these enten-sions A'having collectively the same 'area or surface" oiV eX- posure to their respective chambers as .the plug has at its opposite sides to themairr'water channel, and theje'xtensions are ported `tothe chambers in amanner corresponding tothe main porting 10"0theplug tothe inlet and outlet sides of the valve so asto maintain'thei saine exposure of plugf'wall to their chambers.H

asthe plug wall exposed to the main chan nel at any angular position to which' the plugV is turned, and admitting'water'fromthe low pressureV side of the valve toreact'againsttliefi upper and lower extensions of the `plug at the side "thereof diametrically opposite' the low pressure'in the main channel, or i'nopposi-V tion thereto, and of AadmittingWater from the high pressure sdeofthe lvalveltofreact" against the upper and lower 'eXtensionsof the plug atthre side diarnetrically` opposite Athe high pressure in the main channel, or in` opposition thereto, so that the plug is in'hydroe static balance and perfectly: freer, from any push against 'any1 portion of4 `the side 'i of its jseat.

l The-tubular plug extensions above` and belowthe main port 10 are best shown in Fig.

3 Aand the'chambers in the body to wliicli`opposite sides are ported are shown at Sil-"91n-` 92U-93, the ports in the sides of tlicplug eX- tension areV designated 94.-95-`96-97 and coincidingports in the sleeve l1 are desig- Hated 9495"96'97". W i

Theseports,f;four in number, are each a half circle (asshovvn by the shading) equalV is shut off, and proportionately at any degree of opening ofthe same so as to always expose the same area of plug wall as exposed lin the main channel.

A pipe 7 3 branched at 74 leads high pressure water from side opening 70 inthe main inlet to openings 75-7 6 in chambers 90-91 respectively for reactance against the plug at upper and lower points diametrically op- V`posite the main inlet or high pressure acting on the plug, and similarly a pipe 8O branched at 81 leads low pressure water from a side opening 72 to openings 82-83 in chambers 92-93 respectively for reactance against the plug at upper and lower points diametri- Y low pressure sides of the valve, and when closed the chambers confine the pressures to establish a balancing of the plug, and operate to maintain it at all degrees of opening of the pluo'. I Fig. 9 I Show a modified fol-m of my invention and have used similar numerals primed to designate parts which function the same as those described above. In the ligure the body l has inlet and outlet openings 2 and 3 respectively and an enlarged central chamber in which the rotatable plug 8 is mounted for rotation by the shaft 27. The automatic operating mechanism for the valve being the same as that described for the other figures of the drawing is not shown.

The plug 8 is tubular, being open at both ends and it revolves in a seat or sleeve 11 stationarly mounted within an internal eX- tension of the body so as to pro-vide an annular chamber 115 around the sleeve and open to the outlet or low pressure side of the valve.

Coinciding ports 11G-lll are formed at opposite sides or even intervals around the sleeve and plug so that the fiow of water may pass from the interior of the plug to the outlet 3 or be shut off by revolving the plug. The above construction provides for a balanced pressure against the walls of the plug in all directions at any angular position of the plug, as will be readily seen by a consideration of the drawing.

The operation of my valve is thought clearly imparted in the preceding description, the desired low pressure being maintained by the main plug 8 being revolved back or forth by the movable hydraulic cylinder 4 controlled by a pressure responsive slide valve 7 which may be set to operate at any desired pressure in the low pressure side of the valve, the sensitiveness of the valve being contributed to by the special hydrostatic balancing arrangement described.

One of the particular advantages of a water pressure regulator having a plug valve is that the sharp edges of the main port will cut in two any foreign matter thus clearing the passage, also that it provides in the construction shown in Fig. 3 a straightway passage for full capacity of pipe to meet any emergency demand.

In considering my invention as above described it will be apparent without further drawings or description that many details of construction may be changed without changing the operation, thus instead of the cylinder l being movable on the rod 5 to swing the plug crank 34, the cylinder may be held and the piston do the work, also the driving connection to the crank may be varied in many ways by use of various crank equivalents and in my appended claims I intend to cover any such modifications as come within the spirit of the invention.

I claim:

l. A fluid pressure regulating valve comprising a chambered body provided with fluid inlet and outlet ports, a rotatable valve-plug mounted within the body between said ports and provided with a'passage adapted to be brought into register therewith, and means for rotatingv said valve-plug in response to variations in pressure of fluid on the outlet side of said valve, said means comprising a fixed rod, a cylinder slidably mounted on Said rod, a connection from said cylinder to said plug whereby a movement of the cylinder will rotate the plug, a fluid pressure connection to the cylinder for forcing the same to slide on said rod, a controlling-valve on said fluid connection operated by fluid pressure from the outlet side of said valve and spring means in said controlling valve adjustably arranged for opposing operation thereof by said pressure.

2. A Huid pressure regulating valve comprising a chambered body provided with fluid inlet and outlet ports, a rotatable valveplug mounted Within the body between said ports and provided with a passage adapted to be brought into register therewith, and means for rotating said valve-plug in response to variations in pressure of Huid on the outlet side of said valve, said means comprising a fixed hollow rod, a cylinder slidably mounted on said hollow rod, a fixed piston on said rod within said cylinder, a connection from said cylinder to said plug whereby a movement of the cylinder will rotate the plug, Huid pressure connections to the cylinder for forcing the same in either direction to open and close the valve, a common controlling-valve on said fluid connections operated by fluid pressure from the outlet side of said valve and spring means in said controlling valve adjustably arranged 3.'In a plug valve of the character de-Y scribed, extensions oit' the plug above and below the main iiuid channel, each extensionV comprising a chamber separated from the main fluid channel of the -plug and havingports cppositely disposed; separate chambers in the body above and below the main fluid channel having ports adapted to regis-...

1;. chambers being in the plane of the main fluid channel through the plug valve and disposed at points opposite the inlet and outlet thereof, and the'liquid admitted to the chambers positioned opposite the valve inlet being talren from the inlet side of the main fluid channel, and the liquid admitted to the chambers positioned opposite the outlet being taken from the outlet side of the valve.

5. A water pressure regulating valve comprising a chambered body having a main water passage therethrough, a plug valve rotatably seated in the chamber tov cut oiin the passage and ported to open the same upon turning, means tor turning the plug comprising a reciprocable hydraulic device connected to the valve plug for turning same in opposite directions upon reciprocation of the device, water piping extending from said main water passage arranged for supplying water to Vopposite'ends of the reciprocable device for operating the same, a second reciprocable hydraulic device controlling the flow of water in said piping operated by water from the discharge -side only of said main water passage.

6. A valve device comprising a body shell 'having oppositely disposed inlet and outlet Vchambers for balancing the yplug against thrust and against the outside diameter of said cylindrical extensions for balancing the lateral pressure VVagainst the valve caused through the head of the medium controlled thereby.V

7 A valve'device comprising a bodyshell having oppositely disposed inlet and outlet fports, a valve plug rotatably seated in the body intersecting said ports and ported to open and close the ports of the body, cylindrical extensions on opposite ends of said .plugseated within said body and `forming chambers separated from the plug port, means orintroducing a balancing pressure `to -the chambers, and a passagewayv directly A connecting the two chambers. Y

l; 8. Ajvalvedevce Qoinprsnga hedyV Shell a having' oppositely disposedfinlet and outlet Aportsa valve plug rotatably seated in the body intersecting said ports and ported to open and closetlieportsi of ,the bQdv,.Cv1indrGf1-1 extensions on opposite ends of saidrplug seated within body anddg'orining chambers separated from the plug port, means for introducing a balancing pressure to the chambers, and a passageway extending through the plug body separated from the plug port directly connecting the two chambers. 9. A valve device comprising a body shell having oppositely disposed inlet and outlet ports, a valve plug rotatably seated in the body intersecting said ports and ported to open and close the ports of the body, cylindrical extensions on opposite ends of said plug seated within said body and forming chambers separated from the plug port, means for introducing a balancing pressure to the chambers, and a pair of passageways extending through the plug body separated from the plug port on opposite sides thereof directly connecting the two chambers.

l0. A valve device comprisingV a body shell having oppositely disposed inlet and outlet ports, a valve plug rotatably seatedV in the body intersecting said ports and ported to` open and close the po'its of the body, cylindrical extensions on opposite ends of said plug seated within said body and forming chambers separated from the plug port, separate chambers in the body around the outside of the cylindrical plug extensions and each ported at opposite points to the chambers in the extensions, a passageway leading from t-he inlet side of the valve to both body chambers and a passageway leading from the outlet side of the valve to both body chambers.

11. A valve device comprising a body shell having oppositely disposed inlet and out/let ports, a valve plug rotatably seated in the body intersecting said ports and ported to. open and close the ports of the-body, cylindrical extensions on opposite ends of said plug seated within said body and forming chambers separated from the plug port, separate chambers in the body around the outside of the cylindrical plug extensions and each ported at opposite points to the chambers in the plug extensions, a passageway leading from the inlet side of the valve to both body chambers and a passageway leading from the outlet side of the valve to both body chambers thercombined areas of the ports in said chambers being substantially equal to the combined areas of the inlet land outlet ends of the body ports. y Y

12. In a Water valve comprising a housing provided with a revolvable closing plug ported through one portion for Control of main Water How therethrough by turning of the plug, means for providing a counterflow of the Water through another port-ion of the plug While exposing at all points of turning of the plug areas thereon to opposite directions of pressure to similar areas on the plug exposed to the main flow7 whereby at all points of turning of the plug the same is in hydrostatic balance.

OSCAR G. GOLDMAN. 

